.tools {
  position: absolute;
  margin: 15px 0 0 15px;
}

.version {
  appearance: none;
  cursor: pointer;
  padding: 3px 6px;
  margin-right: 10px;
  vertical-align: middle;
  box-sizing: border-box;
  border: none;
  border-radius: 3px;
}

.keyCodeInfo {
  position: fixed;
  bottom: 10px;
  left: 10px;
  z-index: 9999;
}
.keyCodeInfo span + span {
  margin-left: 10px;
}
.keyCodeInfo span {
  display: inline-block;
  background: #eff0f2;
  border-radius: 3px;
  padding: 5px 10px;
  border-top: 1px solid #f5f5f5;
  box-shadow: inset 0 0 25px #e8e8e8, 0 1px 0 #c3c3c3, 0 2px 0 #c9c9c9, 0 2px 3px #333;
  text-shadow: 0px 1px 0px #f5f5f5;
}

.header {
  background-color: var(--color-header-bg);
  transition: all  0.3s;
  padding: 74px 0 60px 0;
  text-align: center;
}
.header .title {
  text-align: center;
  font-size: 53px;
  font-weight: bold;
  color: #fff;
  text-shadow: -3px -3px 0 #676767, -3px -3px 0 #676767, -3px -3px 0 #676767, -2px -2px 0 #676767, -2px -2px 0 #676767, -1px -1px 0 #676767;
  transition: all 0.3s;
}
.header .title:hover {
  text-shadow: -3px -3px 0 #363636, -3px -3px 0 #363636, -3px -3px 0 #363636, -2px -2px 0 #363636, -2px -2px 0 #363636, -1px -1px 0 #363636;
}
.header .lang {
  text-align: center;
  padding-top: 20px;
}
.header .lang a {
  color: #fff;
  margin: 0 5px;
}
.header .info {
  padding: 25px 0 27px 0;
  text-align: center;
  font-size: 23px;
  line-height: 29px;
  color: #878787;
  max-width: 702px;
  margin: 0 auto;
}
.header .github {
  text-align: center;
  padding: 60px 0 22px 0;
}
.header .github button {
  position: relative;
  display: inline-block;
  border: 1px solid #ddd;
  border-bottom-color: #bbb;
  padding: 0 15px;
  font-family: Helvetica, arial, freesans, clean, sans-serif;
  font-size: 12px;
  font-weight: bold;
  line-height: 23px;
  color: #666;
  text-shadow: 0 1px rgba(255, 255, 255, 0.9);
  cursor: pointer;
  border-radius: 3px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  background: whitesmoke;
  background-image: linear-gradient(-90deg, whitesmoke 0%, #e5e5e5 100%);
}
.header .github button:hover {
  color: #337797;
  border: 1px solid #CBE3EE;
  border-bottom-color: #97C7DD;
  background: #f0f7fa;
  background-image: -webkit-linear-gradient(-90deg, #f0f7fa 0%, #d8eaf2 100%);
}

